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Safe Breeding size ?

BRoSKO

BRoSKO

Registered Noobster
Hey i just bought 2 females and 1 male mice i have put them in a 10 gallon tank. I am wondering what size they need to breed ? Right now the females are about 3 in long not including there tail the male is a little smaller. If there not big enough should i remove they male til they are ? and is they any thing i need to do to make them breed or just leave them be ? thanks for any help :)
 
well I use weight as my measurement for telling when my miceare all pregnant and "big" enough tp breed. My males average size is roughly 30 grams. and the females range between 30 and 40. but thatsbecause some are older then others. So if you could figure those out. I'd personally say 28 grams is minium in my books for breeding my females if I don't know how old they are.My males on the other hand I'd say after they were sexually mature....roughly 30 grams. But I'm saying this from what I know so don't take me as all correct here.
 
5-8 weeks

Not sure where you got your numbers from Baba Lou, but I couldn't disagree more. Males sexually mature at 30 grams? Yes, at 30 grams they are sexually mature and have been for 4-6 months.

:roflmao:

Q
 
If they're old enough to be eating and drinking on their own, they're old enough to be housed together. The breeding will come all in good time when they're ready. Even new colonies of breeding size adults can take up to a couple of months to show signs of breeding progress.

IMHO, its better to start them young with each other, that way the chances of injurious fighting is kept to a minimum.

As for weight...I agree with Quigs, you could potentially be wasting a few months of actual breeding time waiting for that weight (depending on the mouse). I've not really seen any detriment to breeding female mice too young, I typically wait for 6 weeks or so before starting them in any new colony unless they're transferred there while still nursing at an even earlier age (fuzzy or so).

For rats on the other hand, I bred a couple of females when they were still smallish, and birthing was really hard on them. I also believe it stunted their growth, as they never did grow to be the size of their mothers. Right now I'm raising up 8 replacement females and they're just now reaching the size of those small adult females. So maybe in a few weeks I'll attempt breeding a few of those females in the harem and see how it goes.
 
Misty, Quigs I thought I just might tell you. You might have misunderstood or mis-read, whichever. But I tell when my mice are pregnant by their weights. But those weights I gave are the baseline I gave for my own group of mice.
 
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